Improvement in muley-saw mills



L. MORRISON AND A. c.. HARMs,

OF ALLEGHEN Y CITY, PENNSYLVANIA.

IMPROVEMENT IN MULEY-SAW MILLS.

Specification forming part of Letters Patent No. 89,681, dated May 4,1869.

To all whom t may concern:

Be it known that we, L. MORRISON and A. G. HARMS, of Allegheny City, inthe county of Allegheny and State of Pennsylvania, have invented a newand Improved Muley-Saw Mill and we do hereby declare that the followingis a full, clear, and exact description thereof, which will enableothers skilled in the art to make and use the same, reference being hadto the accompanying drawings, forming part of this specification, inwhich- Figure l, Sheet I, represents a front elevation of our improvedsaw-mill. Fig. 2, Sheet II, is a detail vertical transverse section ofthe same, taken on the plane of the line fr m, Fig. l. Fig. 3, Sheet II,is a detail vertical transverse section of the same, taken on the planeof the line y y, Fig. 1. Fig. 4, Sheet II, is a detail horizontal seconof the same, taken on the plane of the line z z, Fig. 1. Fig. 5, SheetII, is a det-ail horizontal section of the saine, taken on the plane ofthe line as x', Fig. 1. Fig. 6, Sheet II, is a detail horizontal sectionof the same, taken oil the plane of the line y y', Fig. l. Fig. 7, SheetIl, is a detail vertical section of the same, taken on the plane of theline z z', Fig. 1.

Similar letters of reference indicate corresponding parts.

This invention relates to certain improvements in the manner of hangingand adjusting reciprocating saws, so that the same will operate and beregulated with ease and without any diiculty.

The invention consists, first, in providing for a lateral adjustment ofthe upper saw guides, for the purpose of giving the saw ,more

' or less throw; also, in making the wrist on the lower saw-buckleadjustable, more or less, apart from the lower saw-pivot; also, for thepurpose of varying the rocking motion of the saw.

The invention further consists in making the side guides of the sawlaterally adjustable, to adapt them to wider or narrower saws, or to letthem follow the saw as the same wears.

A in the drawing represents the frame on which the supports and guidesof our improved saw are arranged. The upper cross-bar, a, of the saidframe supports the upper, and the lower cross-bar, b, the lo wer, guidesof the saw.

To the face of the upper bar, a, is firmly secured a box, B, which isopen in front and at the lower end. Flanges c c are formed on the outerside of the box B, they being tracks for the upper guide-frame, C, whichcarries a rack, d, as usual, so that itcan be set higher and lower byturning a pinion, e. D D are the upper inclined slides or rails, for theupper sawbuckle to travel on. These slides are connected with each otherby means of straps ff, and are, by pins g, pivoted to the side of thebox B. They have curved slots at their upper and lower ends, as isclearly shown in Fig. 3. Bolts or screws h, projecting from the sides ofthe box B, fit through theseslots. v

By means of a screw, E, swiveled in one of the straps f, and working ina stationary plate, t', the plates D can be set in any suitable inclinedposition, so as to be adapted to any desired rocking motion of the saw,the curved slots at their ends allowing such adjustment by means of thescrew E.

The plates D are provided with channels jj, which are formed within themin suitable manner, in the positions indicated in Fig. l andas shown inFig. 5.

A cup, k, is secured in rear or front of each plate D, and communicatesby an opening, Z, with the outside, as in Fig. 5, the channel j enteringthe cup, and passing thence to a transverse aperture, m, formed throughthat portion ofthe plate on which the upper crossliead of the sawtravels.

YVhen oil is poured into the cup 7c through the opening l, the track ofthe cross-head will become well lubricated. The openingl may be closedby a swinging or other lid, a.

F is the saw. To its upper end is secured a strap or buckle, G, with asquare-headed or with two or more fastening-pins, so that said bucklecannot swing on the saw. In the same manner is the lower buckle Hsecured to the lower end ofthe saw. The upper buckle carries the uppercross-head, I, which is, by mea-ns of a box, o, and key p, held inplace, it having a pin that fits through the buckle, so that it canswing to adjust itself automatically to the more or less inclinedposition of the plates D.

A wedge, g, having a head at its thin end, is interposed between thelower edge of the v saw and the upper supporting-edge ofthe buckle H,for the purpose of keeping the parts stiii' and to prevent the saw fromshrinking.

The pitman J is provided with a forked upper end, as in Fig. 1, the saidend being slotted, as shown in Fig. 7. Bolts rr connect the said slottedends with the slides s, which work in grooves formed on fixed plates L,as shown in Fig. 6, said iixed pla-tes being fastened to the lowercross-bar, b.

The buckle H is, by a pivot, t, connected with the pitnian below thepivots r of the pit- Inan. By adjusting the bolts r higher or lower inthe slotted ends of the pitlnan, the rocking inotionof the saw will bevaried. Y

rJlhe plates L have oil-cups u and 11, which are arranged, as in Fig. 6,with channels w w, so as to lubricate the three sides of each crossheadI. These cups are either on the outside of the plates L, as at u, orthey are by apertures a: connected with the outside, so that the oil orother lubricating matter can be filled into the cup without difculty.

Lids like those described for the upper lubricating-channels may also bearranged over the lower cups or apertures, fr, as indicated in Fig. 1.

The guide-frame C, as well as the plates L, carries short guide-bars MM, which are longitudinally adjustable as to the thickness of the saw.The front bars M are, however, also laterally adjustable, they beingheld in sleeves y, which travel on transverse grooves or tracks z z, asshown in Fig. 4. This is to adjust the bars M also as to the width ofthe saw.

The plates L are composed of double thickness, so that that portion onwhich the slide s works may be adjusted to suit the width of said slide.

We claim as new and desire to secure by Letters Patent- 1. The inclinedguides D, when provided with curved slots at their ends, and whenpivoted to the fixed plates B, as described, so that they can be adjusted by means of a screw, E, substantially as herein shown anddescribed.

2. The pitman-straps J, connected as described, with slotted upper endsfor the reception of the wrist-pins r of the slides s, arranged abovethe pivot t, as herein described, for the purpose specified.

3. The sleeves y, carrying the front guide bars M, adapted to be movedlaterally, as described, in the grooves z of the guide-carrying plates,for the purpose specified.

L. MORRISON. A. G. HARMS.

Witnesses:

J. H. MoRRIsoN, JN0. H. HARMs.

